Answer:
Q = 6.9 X 10⁻⁹ C.
Explanation:
Electric field E due to a charge Q at distance r is given by the relation
E = k Q / r²
Here E = 4.8 , k = 9 x 10⁹ ; r = 3.6 m Q = ?
4.8 = [tex]\frac{9\times10^9\times Q}{(3.6)^2}[/tex]
Q = [tex]\frac{4.8\times(3.6)^2}{9\times10^9}[/tex]
Q = 6.9 X 10⁻⁹ C.
